Common Network Protocols (ARP, ICMP, DHCP)

Summary

Lower-level protocols handling address resolution (ARP), diagnostics (ICMP), and automatic IP assignment (DHCP) — each has well-known attack techniques (ARP spoofing, ICMP tunneling) worth understanding.

• 1Learn what ARP spoofing is and why it enables man-in-the-middle attacks on a local network.
• 2Understand what ICMP is normally used for (like ping) and how it can be abused for tunneling.
• 3Research a basic DHCP starvation attack conceptually.